Tuesday is the next big day for Republicans in choosing their presidential nominee, with primaries in Michigan and Arizona.

Then there's an even bigger day a week later: March 6 is this year's Super Tuesday, when 10 states hold primaries and caucuses. Possibly the most consequential one will be in the swing state of Ohio. It has 66 delegates at stake, and it will also be a key battleground in November.

Polls have former Pennsylvania Sen. Rick Santorum holding a slight lead there over former Massachusetts Gov. Mitt Romney, but they also indicate half of Ohio's GOP primary voters may still change their minds.

"We've seen that Gov. Romney has a terrific grassroots organization in place, but I will tell you that Sen. Santorum is playing catch-up," said Alex Triantafilou, chairman of the Hamilton County Republicans, during a debate watch party with local GOP leaders on Wednesday night at Price Hill Chili, a down-home Greek restaurant on Cincinnati's west side. "I don't mean that in a negative way. I mean ... there is a tremendous group of supporters for him, so it's sort of coming together for him."

In the same room where former House Speaker Newt Gingrich made a campaign stop two weeks ago, 10 Ohio Republicans sat around drinking beer and watching the candidates debate on TV.

Among them was Tracy Winkler, Hamilton County's clerk of courts.

"Today," said Winkler, laughing, "and I say today because I've changed my mind several times. Today, I would vote for Rick Santorum."

Winkler acknowledged it's been a wrenching back-and-forth over who she will ultimately support March 6.

"Initially, I wasn't kind of sticking to my conservative roots and I thought I could vote for Romney, and then I thought Gingrich, and really have just kind of seen his campaign kind of falling apart. So I really feel like, right now, it's Santorum," said Winkler. "But we have a few days to go, so we'll see."

Swing State Voters Sway

Another local official, Tony Rosiello, says he and his wife were also once Romney supporters. He now backs Gingrich and says his wife now supports Santorum.

"There was just something missing from [Romney]," said Rosiello, township trustee of Green Township in Hamilton County. "I don't know really what to put my finger on it, maybe a little bit of plastic. Something just didn't jibe with me. There was a more emotional connection with Speaker Gingrich. ... That's something that just stayed with me. It was a gut feel," said Rosiello.

As Rosiello spoke, Romney was arguing a point on the TV screen about women serving in the military.

Bill Miles is enraptured, saying he "wholeheartedly" supports Romney.

This 53-year-old retirement planner is confident about how this contest will play out.

"At the end of the day, at the end of the primary process, Gov. Romney will be standing tall as a choice that will unite conservative Republicans, moderate Republicans, and independents and defeat Barack Obama," said Miles.

Time To Decide

A conservative Republican nearby disagrees. George Brunemann is co-founder of the Southwest Cincinnati Tea Party.

"If you nominate Mitt as our guy for the conservative side, you totally take Obamacare off the table, because he's essentially the author of Obamacare," said Brunemann. "And from a Tea Party perspective, why in the world would we want our only two choices to be the only two men who have signed into law universal health care?"

This southwest corner of Ohio has many Catholics and evangelical social conservatives. There are centrist Republicans as well, like electrical engineer John Ebie, who's also not sold on Romney.

"I'm torn," said Ebie. "I'm a moderate, you know. I'm lookin' at Newt, saying, 'There's a guy who can bring us together, but I'm not sure he can win,' and I'm lookin' at Santorum, saying ... 'I just don't know enough about this guy.' So, for me, it's all about homework now. I got to go out and do more homework."

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